It happens to every site: old, irrelevant pages start ranking again, hurting...

https://www.web-bookmarks.win/stale-content-often-reappears-in-search-results-via-legacy-cache-files-or

It happens to every site: old, irrelevant pages start ranking again, hurting your current SEO authority. This is often caused by search engines rediscovering legacy files from deep archives you thought were long gone